The student told officials he didn't feel well and lied down on the living room sofa bed to sleep. When the student woke up the next morning, Gamora was next to him and allegedly smacked his buttocks when he walked towards the bathroom.

After taking Gamboa's phone to call his mother, the teen allegedly found 10 sexually explicit videos and photos of the substitute teacher performing oral sex on him while he was asleep.

The student said he deleted the videos before meeting with his parents and underwent a sexual assault exam, which, according to the Dallas Morning News, confirmed evidence of DNA on the victim that was not his own.

The student, who speaks little English, told officials he did not give consent to any sexual advances. He said Gamboa was "like a mentor to him" and helped with his homework.

Gamboa was arrested last Wednesday and charged with an improper relationship with a student and sexual assault. The Spring Independent School District fired Gamboa, issuing the following statement after his arrest:

"Immediately upon notification by Harris County of potential pending charges against Mr. Gamboa, a substitute teacher in the district, he was removed from our substitute pool. The safety of our students is our highest priority. The criminal history and references of job applicants, including those who apply to serve as substitutes, are routinely checked before they are hired."